Fabrication of a Cu2O/g-C3N4/WS2 Triple-Layer Photocathode for Photoelectrochemical Hydrogen Evolution

被引：34

作者：

Xu, Xintian ^{[1
]}

Liu, Yizhe ^{[1
]}

Zhu, Yuanzhi ^{[1
]}

Fan, Xiaobin ^{[1
]}

Li, Yang ^{[1
]}

Zhang, Fengbao ^{[1
]}

Zhang, Guoliang ^{[1
]}

Peng, Wenchao ^{[1
]}

机构：

[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China

来源：

CHEMELECTROCHEM | 2017年 / 4卷 / 06期

基金：

中国国家自然科学基金;

关键词：

triple-layered; photocathodes; photoelectrochemistry; tungsten disulfide; exfoliation; mixed-phase WS2; GRAPHITIC CARBON NITRIDE; P-N HETEROJUNCTION; METAL; MOS2; WATER; TRANSITION; NANOSHEETS; PHOTOCATALYST; CONVERSION; GRAPHENE;

D O I：

10.1002/celc.201700014

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A Cu2O/g-C3N4/WS2 triple-layer photocathode was fabricated by using a layer-by-layer assembly method for photoelectrochemical hydrogen evolution. Cu2O was electrodeposited on the FTO as the active layer for light harvesting. The chemically inert g-C3N4 can protect the unstable Cu2O layer and form a p-n junction with Cu2O to increase the light-to-electricity conversion efficiency. Mixed-phase WS2 nanosheets were obtained through a lithium insertion method and used as an effective hydrogen evolution catalyst for photocurrent-to-hydrogen conversion. This photocathode is effective for photoelectrochemical hydrogen evolution, and a photocurrent of -9.5 mAcm(-2) at -0.55 V versus RHE (pH 6.0) can be obtained under visible light (lambda >= 420 nm, 100 mWcm(-2)).

引用

页码：1498 / 1502

页数：5

共 47 条

[1] 2H → 1T phase transition and hydrogen evolution activity of MoS2, MoSe2, WS2 and WSe2 strongly depends on the MX2 composition [J].

Ambrosi, Adriano ;

Sofer, Zdenek ;

Pumera, Martin .

CHEMICAL COMMUNICATIONS, 2015, 51 (40) :8450-8453

[2] Catalyzing the Hydrogen Evolution Reaction (HER) with Molybdenum Sulfide Nanomaterials [J].

Benck, Jesse D. ;

Hellstern, Thomas R. ;

Kibsgaard, Jakob ;

Chakthranont, Pongkarn ;

Jaramillo, Thomas F. .

ACS CATALYSIS, 2014, 4 (11) :3957-3971

[3]

Bollinger M.V., 2001, Phys Rev Lett, V87

[4] In-situ reduction synthesis of nano-sized Cu2O particles modifying g-C3N4 for enhanced photocatalytic hydrogen production [J].

Chen, Jie ;

Shen, Shaohua ;

Guo, Penghui ;

Wang, Meng ;

Wu, Po ;

Wang, Xixi ;

Guo, Liejin .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2014, 152 :335-341

[5] Mechanically-induced reverse phase transformation of MoS2 from stable 2H to metastable 1T and its memristive behavior [J].

Cheng, Peifu ;

Sun, Kai ;

Hu, Yun Hang .

RSC ADVANCES, 2016, 6 (70) :65691-65697

[6]

Chhowalla M, 2013, NAT CHEM, V5, P263, DOI [10.1038/nchem.1589, 10.1038/NCHEM.1589]

[7] Interfacial band-edge engineered TiO2 protection layer on Cu2O photocathodes for efficient water reduction reaction [J].

Choi, Jaesuk ;

Song, Jun Tae ;

Jang, Ho Seong ;

Choi, Min-Jae ;

Sim, Dong Min ;

Yim, Soonmin ;

Lim, Hunhee ;

Jung, Yeon Sik ;

Oh, Jihun .

ELECTRONIC MATERIALS LETTERS, 2017, 13 (01) :57-65

[8] Edge-exposed MoS2 nano-assembled structures as efficient electrocatalysts for hydrogen evolution reaction [J].

Chung, Dong Young ;

Park, Seung-Keun ;

Chung, Young-Hoon ;

Yu, Seung-Ho ;

Lim, Dong-Hee ;

Jung, Namgee ;

Ham, Hyung Chul ;

Park, Hee-Young ;

Piao, Yuanzhe ;

Yoo, Sung Jong ;

Sung, Yung-Eun .

NANOSCALE, 2014, 6 (04) :2131-2136

[9] Photoluminescence from Chemically Exfoliated MoS2 [J].

Eda, Goki ;

Yamaguchi, Hisato ;

Voiry, Damien ;

Fujita, Takeshi ;

Chen, Mingwei ;

Chhowalla, Manish .

NANO LETTERS, 2011, 11 (12) :5111-5116

[10] Nanostructured metal chalcogenides: synthesis, modification, and applications in energy conversion and storage devices [J].

Gao, Min-Rui ;

Xu, Yun-Fei ;

Jiang, Jun ;

Yu, Shu-Hong .

CHEMICAL SOCIETY REVIEWS, 2013, 42 (07) :2986-3017

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